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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/test/experimental/types/is_empty.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/experimental/types/is_empty.cpp b/src/boost/libs/hana/test/experimental/types/is_empty.cpp new file mode 100644 index 000000000..f90c01549 --- /dev/null +++ b/src/boost/libs/hana/test/experimental/types/is_empty.cpp @@ -0,0 +1,34 @@ +// Copyright Louis Dionne 2013-2017 +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#include <boost/hana/assert.hpp> +#include <boost/hana/experimental/types.hpp> +#include <boost/hana/is_empty.hpp> +#include <boost/hana/not.hpp> +namespace hana = boost::hana; + + +template <int> struct x; + +int main() { + BOOST_HANA_CONSTANT_CHECK(hana::is_empty( + hana::experimental::types<>{} + )); + + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( + hana::experimental::types<x<0>>{} + ))); + + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( + hana::experimental::types<x<0>, x<1>>{} + ))); + + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( + hana::experimental::types<x<0>, x<1>, x<2>>{} + ))); + + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( + hana::experimental::types<x<0>, x<1>, x<2>, x<3>>{} + ))); +} |